function addZero (num) {
  return Number(num) < 10 ? `0${num}` : num;
}

export const formatDate = (year, month, day, hour, minute) => {
  const newmonth = addZero(month);
  const newday = addZero(day);
  const newhour = addZero(hour);
  const newminute = addZero(minute);

  return year + '-' + newmonth + '-' + newday + ' ' + newhour + ":" + newminute + ":00";
};

// 获取当前时间
export const getDate = (value) => {
  let date = '';
  if (value) {
    date = new Date(value);
  } else {
    date = new Date();
  }
  const y = date.getFullYear(),
    m = date.getMonth() + 1,
    d = date.getDate(),
    h = date.getHours(), //获取当前小时数(0-23)
    f = date.getMinutes();
  return formatDate(y, m, d, h, f);
};

// 获取对应年份月份的天数
export const getMonthDay = (year, month) => {
  var d = new Date(year, month, 0);
  return d.getDate();
};

//根据时间2019-01-02 09：12  得到 ['2019','1','2','9','12']
export const getArrWithTime = (str) => {
  let arr1 = str.split(' ');
  let arr2 = (arr1[0]).split('-');
  let arr3 = arr1[1].split(':');
  let arr = arr2.concat(arr3);
  arr[1] = arr[1].startsWith('0') ? arr[1].substr(1, arr[1].length) : arr[1];
  arr[2] = arr[2].startsWith('0') ? arr[2].substr(1, arr[2].length) : arr[2];
  arr[3] = arr[3].startsWith('0') ? arr[3].substr(1, arr[3].length) : arr[3];
  arr[4] = arr[4].startsWith('0') ? arr[4].substr(1, arr[4].length) : arr[4];
  return arr;
};

// 获取月份天数
export const getDayList = (year, month) => {
  const dayList = [];
  var d = new Date(year, month, 0);
  for (let i = 1; i <= d.getDate(); i++) {
    dayList.push(i + "日");
  }

  return dayList;
};

// 获取最近的年、月、日、时、分的集合
export const getPickerViewList = () => {
  const now = new Date();
  const year = now.getFullYear();
  const month = now.getMonth() + 1;
  const yearList = [];
  const monthLsit = [];
  const dayList = getDayList(year, month);
  const hourList = [];
  const minuteList = [];

  for (let i = 1970; i <= 2070; i++) {
    yearList.push(i + "年");
  }
  for (let i = 1; i <= 12; i++) {
    monthLsit.push(i + "月");
  }

  for (let i = 0; i <= 23; i++) {
    hourList.push(i + "点");
  }
  for (let i = 0; i <= 59; i++) {
    minuteList.push(i + "分");
  }
  return { yearList, monthLsit, dayList, hourList, minuteList };
};

